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Finding the Fourth Proportional to 618,765.66, 928,014.84 and 219,419.46

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Solution

The fourth proportional to 618,765.66, 928,014.84 and 219,419.46 is: 329,081.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,765.66 : 928,014.84 = 219,419.46 : x
  2. Step 2: Convert to fraction form
    618,765.66/928,014.84 = 219,419.46/x
  3. Step 3: Cross multiply
    618,765.66x = 928,014.84 × 219,419.46
  4. Step 4: Simplify right side
    618,765.66x = 203,624,515,064.79
  5. Step 5: Solve for x
    x = 203,624,515,064.79/618,765.66
  6. Step 6: Final answer
    x = 329,081.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.